Acid and Base quiz

Soap is a weak base.  What is true about the taste of bases?

• they taste sour
• they taste sweet
• they taste bitter
• they taste salty

Which of these solutions is an acid?

• Dish Soap: pH of 12
• Tomato Soup: pH of 4
• Baking Soda: pH of 9
• Drain Cleaner: pH of 14

From which point to which point in the pH scale is Base

• 7.1- 14

• 0- 6.9

• 6.2- 9.1

• 12- 14

in which Acid base indicator is Acid is colourless base is pink

• Methyl orange

• Litmus paper

• Phenolphthalein

• Universal indicator

Base change red litmus paper to blue.

• True

• False

Character of acid is having sour taste.

• True

• False

Acid change blue litmus paper to red.

• True

• False

How do acids taste compared to bases?

• Acid is sweet and base is sour

• Acid is bitter and base is sour

• Acid is sour and base is bitter

Which of the following statements is correct?

• Blue litmus paper turns red when placed in a base.

• Red litmus paper turns blue when placed in a base.

• Blue litmus paper stays blue when placed in an acid.

• Red litmus paper stays red when placed in a base.

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid